
It is my pleasure to welcome you to this course on Quantum Scattering Theory and Feynman Diagrams. During the next 27 hours, we shall explore one of the most elegant and powerful areas of modern theoretical physics.
This course will take us from the fundamentals of quantum scattering, including the Born approximation, partial wave analysis, and scattering cross-sections, to the fascinating world of quantum field theory, where Feynman rules and Feynman diagrams provide a systematic language for describing and calculating particle interactions.
Our goal is not merely to learn mathematical techniques, but to understand the physical ideas behind them. We will see how abstract quantum principles explain real phenomena - from electron scattering in atoms to the interactions of fundamental particles studied at modern accelerators such as CERN.
By the end of this course, I hope you will appreciate not only how to calculate scattering amplitudes and draw Feynman diagrams, but also why these concepts have become indispensable tools in modern physics. I wish you all an enjoyable, intellectually stimulating, and successful learning journey.
- Teacher: Binil Aryal



